ADN2891

更新时间： 2024-09-17 03:17:51

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
16页	606K
描述
3.3 V, 3.2 Gbps, Limiting Amplifier

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ADN2891 数据手册

3.3 V, 3.2 Gbps,

Limiting Amplifier

ADN2891

FEATURES

GENERAL DESCRIPTION

Input sensitivity: 4 mV p-p

80 ps rise/fall times

The ADN2891 is a 3.2 Gbps limiting amplifier with integrated

loss-of-signal (LOS) detection circuitry and a received signal

strength indicator (RSSI). This part is optimized for SONET,

Gigabit Ethernet (GbE), and Fibre Channel optoelectronic

conversion applications. The ADN2891 has a differential input

sensitivity of 4 mV p-p and accepts up to a 2.0 V p-p differential

input overload voltage. The ADN2891 supports current mode

logic (CML) outputs with controlled rise and fall times.

CML outputs: 700 mV p-p differential

Programmable LOS detector: 3.5 mV to 35 mV

Rx signal strength indicator (RSSI)

SFF-8472-compliant average power measurement

Single-supply operation: 3.3 V

Low power dissipation: 145 mW

Available in space-saving 3 mm × 3 mm, 16-lead LFCSP

Extended temperature range: −40°C to +95°C

SFP reference design available

By monitoring the bias current through a photodiode, the on-

chip RSSI detector measures the average power received with

2% typical linearity over the entire valid input range of the

photodiode. The on-chip RSSI detector facilitates SFF-8472-

compliant optical transceivers by eliminating the need for

external RSSI detector circuitry.

APPLICATIONS

SFP/SFF/GBIC optical transceivers

OC-3/OC-12/OC-48, GbE, Fibre Channel (FC) receivers

10GBASE-LX4 transceivers

Additional features include a programmable loss-of-signal

(LOS) detector and output squelch.

WDM transponders

The ADN2891 is available in a 3 mm × 3 mm, 16-lead LFCSP.

FUNCTIONAL BLOCK DIAGRAM

AVCC

AVEE

DRVCC DRVEE

DRVCC

ADN2891

50Ω

NIN

OUTP

OUTN

ADN2880

50Ω

3kΩ

REF

10k

LOS

PD_VCC

RSSI/LOS

DETECTOR

ADuC7020

RSSI_OUT

PD_CATHODE

CAZ1

CAZ2

THRADJ SQUELCH

0.01μF

Figure 1.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADN2891相关器件

型号	品牌	获取价格	描述	数据表
ADN2891ACP	ADI	获取价格	3.3 V, 3.2 Gbps, Limiting Amplifier
ADN2891ACP-RL	ADI	获取价格	IC SPECIALTY TELECOM CIRCUIT, QCC16, 3 X 3 MM, MO-220-VEED-2, LFCSP-16, Telecom IC:Other
ADN2891ACP-RL7	ADI	获取价格	IC SPECIALTY TELECOM CIRCUIT, QCC16, 3 X 3 MM, MO-220-VEED-2, LFCSP-16, Telecom IC:Other
ADN2891ACPZ-500RL7	ADI	获取价格	3.3 V, 3.2 Gbps, Limiting Amplifier
ADN2891ACPZ-RL	ADI	获取价格	3.3 V, 3.2 Gbps, Limiting Amplifier
ADN2891ACPZ-RL7	ADI	获取价格	3.3 V, 3.2 Gbps, Limiting Amplifier
ADN2892	ADI	获取价格	3.3 V 4.25 Gb/s Limiting Amplifier
ADN2892ACP-RL	ADI	获取价格	3.3 V 4.25 Gb/s Limiting Amplifier
ADN2892ACP-RL7	ADI	获取价格	3.3 V 4.25 Gb/s Limiting Amplifier
ADN2892ACPZ-500RL7	ADI	获取价格	3.3 V, 4.25 Gbps, Limiting Amplifier

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